The motor unit

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  • Created by: Megan66
  • Created on: 28-10-16 17:01
Repeated nerve impulses with no time to relax creates a smooth,sustained contraction rather than twitches
Wave summation
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A sequence of impulses with sufficient intensity to stimulate all of the muscle fibres. If the intensity is not enough, none of them contract.
All or none law
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A nerve cell forming part of a pathway along which electrical impulses pass from the brain to the muscles
Motor neurones
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Where the motor neurone and the muscle fibre meet
Neuromascular junction
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A motor neurone and its muscle fibres
Motor unit
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The strength of a contraction changes by altering the number and size of the muscles motor units
Spatial summation
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A sustained muscle contraction from a series of fast repeating stimul
Tetanic contraction
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Other cards in this set

Card 2

Front

A sequence of impulses with sufficient intensity to stimulate all of the muscle fibres. If the intensity is not enough, none of them contract.

Back

All or none law

Card 3

Front

A nerve cell forming part of a pathway along which electrical impulses pass from the brain to the muscles

Back

Preview of the front of card 3

Card 4

Front

Where the motor neurone and the muscle fibre meet

Back

Preview of the front of card 4

Card 5

Front

A motor neurone and its muscle fibres

Back

Preview of the front of card 5
View more cards

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